Morgan Schneiderlin will be fined two weeks’ wages if he refuses to make himself available for Southampton against Liverpool on Sunday and has also been told to think about how his career could be affected by his decisions.

Southampton manager Ronald Koeman revealed on Friday that Schneiderlin was mentally and physically unprepared for the pre-season friendly against Bayer Leverkusen on Saturday amid the determination of Tottenham Hotspur , who are now managed by Mauricio Pochettino, to sign him.

Koeman’s attitude is that Schneiderlin is not for sale at any price and, in any case, Spurs’ first offer of around £10 million was not regarded as even close to the market valuation of the France midfielder.

Southampton chairman Ralph Krueger and Koeman met Schneiderlin at the club’s training base on Friday and allowed the 24-year-old two days’ off to think through the situation. He reported for training at the club’s Marchwood base on Monday morning.

The club’s stance is that they would be prepared to keep Schneiderlin and continue fining him if he refuses to play. The potential consequences of that decision for his international career have also been spelt out.

Schneiderlin only made his France debut in June and the manager, Didier Deschamps, has clearly suggested in his treatment of the disgraced 2010 World Cup squad that he takes off-field conduct extremely seriously.

Southampton still hope and expect that it will not come to this and there was some encouragement to be had on Monday in Schneiderlin taking a normal part in training. The problem, however, is that by not featuring in Southampton’s pre-season programme – and not playing at all since France’s 0-0 draw with Ecuador at the World Cup on June 25 – there is also now a physical issue.

Koeman has stressed to Schneiderlin that there is “always a way back” and they hope that he will accept both the club’s decision and the importance of respecting a contract that was only improved last year and which gave him the guarantee of an estimated weekly wage until 2017 of £30,000.

Tottenham, though, remain keen to sign Schneiderlin and a new bid will be made. Yet while Southampton feel like they received “a premium” from Liverpool, Manchester United and Arsenal for the combined £92.5 million sales of Calum Chambers, Dejan Lovren, Rickie Lambert, Luke Shaw and Adam Lallana, the bid from Spurs is not of the same order.

The questions now are whether Schneiderlin will be mentally or physically ready to play later in the week and whether Spurs Chairman Daniel Levy will significantly improve his bid and if Southampton will eventually decide they have no alternative but to let the player go.

They are still trying to recruit a striker and a defender – a deal for Florin Gordos is close – but Koeman had always planned with Schneiderlin in his squad. At the end of last season, Schneiderlin was credited for the most tackles, interceptions and highest work rate in the Premier League by Stats Zone. He was also named both Player’s Player and Fan’s Player of the Year at Southampton.